/* Compilation switch flag definitions for GCC.
Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#ifndefGCC_FLAGS_H
#defineGCC_FLAGS_H
#include"options.h"enum debug_info_type
{
NO_DEBUG, /* Write no debug info. */
DBX_DEBUG, /* Write BSD .stabs for DBX (using dbxout.c). */
SDB_DEBUG, /* Write COFF for (old) SDB (using sdbout.c). */
DWARF2_DEBUG, /* Write Dwarf v2 debug info (using dwarf2out.c). */
XCOFF_DEBUG, /* Write IBM/Xcoff debug info (using dbxout.c). */
VMS_DEBUG, /* Write VMS debug info (using vmsdbgout.c). */
VMS_AND_DWARF2_DEBUG /* Write VMS debug info (using vmsdbgout.c).
and DWARF v2 debug info (using dwarf2out.c). */
};
/* Specify which kind of debugging info to generate. */externenum debug_info_type write_symbols;
/* Names of debug_info_type, for error messages. */externconstchar *const debug_type_names[];
enum debug_info_level
{
DINFO_LEVEL_NONE, /* Write no debugging info. */
DINFO_LEVEL_TERSE, /* Write minimal info to support tracebacks only. */
DINFO_LEVEL_NORMAL, /* Write info for all declarations (and line table). */
DINFO_LEVEL_VERBOSE /* Write normal info plus #define/#undef info. */
};
/* Specify how much debugging info to generate. */externenum debug_info_level debug_info_level;
/* Nonzero means use GNU-only extensions in the generated symbolic
debugging information. */extern bool use_gnu_debug_info_extensions;
/* Enumerate visibility settings. This is deliberately ordered from most
to least visibility. */
#ifndefSYMBOL_VISIBILITY_DEFINED
#defineSYMBOL_VISIBILITY_DEFINEDenum symbol_visibility
{
VISIBILITY_DEFAULT,
VISIBILITY_PROTECTED,
VISIBILITY_HIDDEN,
VISIBILITY_INTERNAL
};
#endif/* The default visibility for all symbols (unless overridden). */externenum symbol_visibility default_visibility;
struct visibility_flags
{
unsigned inpragma : 1; /* True when in #pragma GCC visibility. */unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
};
/* Global visibility options. */externstruct visibility_flags visibility_options;
/* APPLE LOCAL begin optimization pragmas 3124235/3420242 *//* APPLE LOCAL end optimization pragmas 3124235/3420242 *//* Do print extra warnings (such as for uninitialized variables).
-W/-Wextra. */extern bool extra_warnings;
/* Nonzero to warn about unused variables, functions et.al. Use
set_Wunused() to update the -Wunused-* flags that correspond to the
-Wunused option. */externvoidset_Wunused (int setting);
/* Nonzero means warn about any objects definitions whose size is larger
than N bytes. Also want about function definitions whose returned
values are larger than N bytes. The value N is in `larger_than_size'. */extern bool warn_larger_than;
extern HOST_WIDE_INT larger_than_size;
/* Nonzero means warn about constructs which might not be strict
aliasing safe. */externint warn_strict_aliasing;
/* Nonzero means warn about optimizations which rely on undefined
signed overflow. */externint warn_strict_overflow;
/* Temporarily suppress certain warnings.
This is set while reading code from a system header file. */externint in_system_header;
/* Nonzero for -dp: annotate the assembly with a comment describing the
pattern and alternative used. */externint flag_print_asm_name;
/* Now the symbols that are set with `-f' switches. *//* Nonzero means `char' should be signed. */externint flag_signed_char;
/* Nonzero means give an enum type only as many bytes as it needs. A value
of 2 means it has not yet been initialized. */externint flag_short_enums;
/* Nonzero for -fpcc-struct-return: return values the same way PCC does. */externint flag_pcc_struct_return;
/* APPLE LOCAL begin fwritable strings *//* Nonzero for -fwritable-strings:
store string constants in data segment and don't uniquize them. */externint flag_writable_strings;
/* APPLE LOCAL end fwritable strings *//* 0 means straightforward implementation of complex divide acceptable.
1 means wide ranges of inputs must work for complex divide.
2 means C99-like requirements for complex multiply and divide. */externint flag_complex_method;
/* APPLE LOCAL begin -fobey-inline *//* Nonzero for -fobey-inline: 'inline' keyword must be obeyed, regardless
of codesize. */externint flag_obey_inline;
/* APPLE LOCAL end -fobey-inline *//* Nonzero means that we don't want inlining by virtue of -fno-inline,
not just because the tree inliner turned us off. */externint flag_really_no_inline;
/* Nonzero if we are only using compiler to check syntax errors. */externint rtl_dump_and_exit;
/* Nonzero means we should save auxiliary info into a .X file. */externint flag_gen_aux_info;
/* Nonzero means suppress output of instruction numbers and line number
notes in debugging dumps. */externint flag_dump_unnumbered;
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */externint flag_pedantic_errors;
/* Nonzero if we are compiling code for a shared library, zero for
executable. */externint flag_shlib;
/* -dA causes debug information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read the
generated assembly code (perhaps while debugging the compiler itself).
Currently, this switch is only used by dwarfout.c; however, it is intended
to be a catchall for printing debug information in the assembler file. */externint flag_debug_asm;
/* Generate code for GNU or NeXT Objective-C runtime environment. */externint flag_next_runtime;
externint flag_dump_rtl_in_asm;
/* If one, renumber instruction UIDs to reduce the number of
unused UIDs if there are a lot of instructions. If greater than
one, unconditionally renumber instruction UIDs. */externint flag_renumber_insns;
/* Other basic status info about current function. *//* Nonzero means current function must be given a frame pointer.
Set in stmt.c if anything is allocated on the stack there.
Set in reload1.c if anything is allocated on the stack there. */externint frame_pointer_needed;
/* Nonzero if subexpressions must be evaluated from left-to-right. */externint flag_evaluation_order;
/* Value of the -G xx switch, and whether it was passed or not. */externunsigned HOST_WIDE_INT g_switch_value;
extern bool g_switch_set;
/* Values of the -falign-* flags: how much to align labels in code.
0 means `use default', 1 means `don't align'.
For each variable, there is an _log variant which is the power
of two not less than the variable, for .align output. */externint align_loops_log;
/* APPLE LOCAL begin optimization pragmas 4760857*//* remove align_loops_max_skip *//* APPLE LOCAL end optimization pragmas 4760857*/externint align_jumps_log;
/* APPLE LOCAL begin optimization pragmas 4760857*//* remove align_jumps_max_skip *//* APPLE LOCAL end optimization pragmas 4760857*/externint align_labels_log;
externint align_labels_max_skip;
externint align_functions_log;
/* APPLE LOCAL begin mainline aligned functions 5933878 *//* Removed extern force_align_functions_log. *//* APPLE LOCAL end mainline aligned functions 5933878 *//* Nonzero if we dump in VCG format, not plain text. */externint dump_for_graph;
/* Selection of the graph form. */enum graph_dump_types
{
no_graph = 0,
vcg
};
externenum graph_dump_types graph_dump_format;
/* Nonzero means to collect statistics which might be expensive
and to print them when we are done. */externint flag_detailed_statistics;
/* Nonzero means that we defer emitting functions until they are actually
used. */externint flag_remove_unreachable_functions;
/* Nonzero if we should track variables. */externint flag_var_tracking;
/* True if flag_speculative_prefetching was set by user. Used to suppress
warning message in case flag was set by -fprofile-{generate,use}. */extern bool flag_speculative_prefetching_set;
/* A string that's used when a random name is required. NULL means
to make it really random. */externconstchar *flag_random_seed;
/* Returns TRUE if generated code should match ABI version N or
greater is in use. */
#defineabi_version_at_least(N) \
(flag_abi_version == 0 || flag_abi_version >= (N))
/* True if the given mode has a NaN representation and the treatment of
NaN operands is important. Certain optimizations, such as folding
x * 0 into 0, are not correct for NaN operands, and are normally
disabled for modes with NaNs. The user can ask for them to be
done anyway using the -funsafe-math-optimizations switch. */
#defineHONOR_NANS(MODE) \
(MODE_HAS_NANS (MODE) && !flag_finite_math_only)
/* Like HONOR_NANs, but true if we honor signaling NaNs (or sNaNs). */
#defineHONOR_SNANS(MODE) (flag_signaling_nans && HONOR_NANS (MODE))
/* As for HONOR_NANS, but true if the mode can represent infinity and
the treatment of infinite values is important. */
#defineHONOR_INFINITIES(MODE) \
(MODE_HAS_INFINITIES (MODE) && !flag_finite_math_only)
/* Like HONOR_NANS, but true if the given mode distinguishes between
positive and negative zero, and the sign of zero is important. */
#defineHONOR_SIGNED_ZEROS(MODE) \
(MODE_HAS_SIGNED_ZEROS (MODE) && !flag_unsafe_math_optimizations)
/* Like HONOR_NANS, but true if given mode supports sign-dependent rounding,
and the rounding mode is important. */
#defineHONOR_SIGN_DEPENDENT_ROUNDING(MODE) \
(MODE_HAS_SIGN_DEPENDENT_ROUNDING (MODE) && flag_rounding_math)
/* APPLE LOCAL begin -fast or -fastf or -fastcp *//* Nonzero if we should perform SPEC oriented optimizations for C. */externint flag_fast;
/* Nonzero if we should perform SPEC oriented optimizations for C that is
produced by the NAG Fortan-to-C translator. */externint flag_fastf;
/* Nonzero if we should perform SPEC oriented optimizations for C++. */externint flag_fastcp;
/* APPLE LOCAL end -fast or -fastf or -fastcp *//* APPLE LOCAL begin gdb only used symbols */
#ifdefDBX_ONLY_USED_SYMBOLS/* Nonzero if generating debugger info for used symbols only. */externint flag_debug_only_used_symbols;
#endif/* APPLE LOCAL end gdb only used symbols *//* APPLE LOCAL begin predictive compilation */externint predictive_compilation;
/* APPLE LOCAL end predictive compilation *//* APPLE LOCAL begin disable_typechecking_for_spec_flag */externint disable_typechecking_for_spec_flag;
/* APPLE LOCAL end disable_typechecking_for_spec_flag *//* APPLE LOCAL begin Altivec */externint flag_disable_opts_for_faltivec;
/* APPLE LOCAL end Altivec *//* APPLE LOCAL begin ss2 */externint flag_pch_file;
externint flag_save_repository;
/* APPLE LOCAL end ss2 *//* True if overflow wraps around for the given integral type. That
is, TYPE_MAX + 1 == TYPE_MIN. */
#defineTYPE_OVERFLOW_WRAPS(TYPE) \
(TYPE_UNSIGNED (TYPE) || flag_wrapv)
/* True if overflow is undefined for the given integral type. We may
optimize on the assumption that values in the type never overflow.
IMPORTANT NOTE: Any optimization based on TYPE_OVERFLOW_UNDEFINED
must issue a warning based on warn_strict_overflow. In some cases
it will be appropriate to issue the warning immediately, and in
other cases it will be appropriate to simply set a flag and let the
caller decide whether a warning is appropriate or not. */
#defineTYPE_OVERFLOW_UNDEFINED(TYPE) \
(!TYPE_UNSIGNED (TYPE) && !flag_wrapv && !flag_trapv && flag_strict_overflow)
/* True if overflow for the given integral type should issue a
trap. */
#defineTYPE_OVERFLOW_TRAPS(TYPE) \
(!TYPE_UNSIGNED (TYPE) && flag_trapv)
/* Names for the different levels of -Wstrict-overflow=N. The numeric
values here correspond to N. */enum warn_strict_overflow_code
{
/* Overflow warning that should be issued with -Wall: a questionable
construct that is easy to avoid even when using macros. Example:
folding (x + CONSTANT > x) to 1. */
WARN_STRICT_OVERFLOW_ALL = 1,
/* Overflow warning about folding a comparison to a constant because
of undefined signed overflow, other than cases covered by
WARN_STRICT_OVERFLOW_ALL. Example: folding (abs (x) >= 0) to 1
(this is false when x == INT_MIN). */
WARN_STRICT_OVERFLOW_CONDITIONAL = 2,
/* Overflow warning about changes to comparisons other than folding
them to a constant. Example: folding (x + 1 > 1) to (x > 0). */
WARN_STRICT_OVERFLOW_COMPARISON = 3,
/* Overflow warnings not covered by the above cases. Example:
folding ((x * 10) / 5) to (x * 2). */
WARN_STRICT_OVERFLOW_MISC = 4,
/* Overflow warnings about reducing magnitude of constants in
comparison. Example: folding (x + 2 > y) to (x + 1 >= y). */
WARN_STRICT_OVERFLOW_MAGNITUDE = 5
};
/* Whether to emit an overflow warning whose code is C. */
#defineissue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c))
#endif/* ! GCC_FLAGS_H */